uHappyLogic @kosiak_lukaszEuropeFollow BadgesProblem SolvingCPPDays ofStatistics CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencekosiak_lukasz has not updated employment details yet.Educationkosiak_lukasz has not updated education details yet.